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Fe/MnPd薄膜各向异性和矫顽力的研究

唐云俊 B.F.P.Roos B.Hillebrands 赵宏武 詹文山

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Fe/MnPd薄膜各向异性和矫顽力的研究

唐云俊, B.F.P.Roos, B.Hillebrands, 赵宏武, 詹文山

ANISOTROPY AND COERCIVITY ANALYSIS OF Fe/MnPd BILAYERS

TANG YUN-JUN, B.F.P.ROOS, B.HILLEBRANDS, ZHAO HONG-WU, ZHAN WEN-SHAN
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  • 从理论和实验上对Fe/MnPd薄膜的交换偏置效应、各向异性和矫顽力的增加作了系统的研究.研究表明,在FM/AF结构中,FM和AF的交换耦合作用会诱导系统产生高阶各向异性,在Fe/MnPd结构中获得的单轴和立方各向异性的大小同单轴各向异性与铁磁层的厚度成反比关系一样.同时,铁磁层(FM)和反铁磁层(AF)的交换耦合作用诱导而产生的高阶各向异性的存在是使系统矫顽力增加的重要原因.
    We present the detailed studies of the exchange bias effect,the coercivity and the enhanced coercivity of exchange bias bilayer Fe/MnPd,both experimentally and theoretically.We have,so far as we know for the first time,demonstrated that the existence of large higher order anisotropies due to exchange coupling between different Fe and MnPd layers can account for the large increase of coercivity in Fe/MnPd system.The linear dependence of coercivity on inverse Fe thickness can be well explained by a phenomenological model by introducing higher order anisotropy term into the total free energy of the system.
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出版历程
  • 收稿日期:  1999-04-26
  • 刊出日期:  2000-05-20

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